After taking the first audio file, look up. You should see the second file in this level. Use the rocky ramps to reach it; not too hard with the right tools.

3 / 13

Stay with the lower path in the cave. You will find a dead body next to a pool. Audio file get.

4 / 13

At the entrance to the ruins, there's an audio file at the bottom of the stairs.

5 / 13

After hacking the door and neutralizing all the combat androids, but before climbing out to regroup with your marines (and get the Smartgun), check behind the block you mantle on for the file.

6 / 13

On your way to the drop ship's crash site, there is a broken Predator statue. Check the dark area behind it for the file.

7 / 13

At the dropship's crash site, there is a break in the wall that leads to a small clearing ... and an audio file.

8 / 13

In the ruins maze, there is a small grassy clearing with one of the Predator's switches (in the Predator campaign); you will want to check that clearing for the audio file. If you haven't played the Predator yet, follow the friendly marine past a stone archway and search the grassy clearing past it for the file.

9 / 13

Locate the door you need to hack to leave the ruins maze. Position it behind you. Walk straight ahead (on the upper level) until you find some stairs leading down into a ruined temple. The file is inside there. In this illustration, the temple ruins are visible past the Predator statue.

10 / 13

At the combat arena, go up the stairs to the Predator temple. Check the top of the stairs for this file.

11 / 13

Next to the research bungalow at the combat arena.

12 / 13

Inside the research bungalow. Note you get this after the boss fight.

13 / 13

Before or after rescuing your comrade, you can check the rooms in the alien hive for this audio file. Coming back out, you will definitely see it like so.